/Engine/Source/Editor/SequenceRecorder/Public/IMovieSceneSectionRecorder.h
Start recording a section. Should create the section and setup anything needed for recording here.
void CreateSection ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * InObjectToRecord, class [UMovieScene](API\Runtime\MovieScene\UMovieScene) * InMovieScene, const [FGuid](API\Runtime\Core\Misc\FGuid) & InGuid, float InTime )